Home / 203,005.90-280,204.37-118,139.30

Finding the Fourth Proportional to 203,005.90, 280,204.37 and 118,139.30

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Solution

The fourth proportional to 203,005.90, 280,204.37 and 118,139.30 is: 163,064.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,005.90 : 280,204.37 = 118,139.30 : x
  2. Step 2: Convert to fraction form
    203,005.90/280,204.37 = 118,139.30/x
  3. Step 3: Cross multiply
    203,005.90x = 280,204.37 × 118,139.30
  4. Step 4: Simplify right side
    203,005.90x = 33,103,148,128.74
  5. Step 5: Solve for x
    x = 33,103,148,128.74/203,005.90
  6. Step 6: Final answer
    x = 163,064.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.